It is a very involved procedure. Get a manual on your car from the parts store or from AUTOREPAIR2000.COM
Remove the water supply lines from your 1990 Ford E3 50 heater core. Remove the heater core retaining bolts. Reverse the process to install your new heater core.
The 1990 Mazda 626 air conditioning low pressure port can be found on top of the air conditioning compressor. The low pressure port should be labeled.
The voltage regulator is inside the alternator.
you have to remove transmission to take out and replace throwout bearing
Replace the ignition coil.
You don't
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very carefully
comes out inside . remove glovebox and go in that way . about one hour .
You may want to check your model year. There is no such thing as a 1990 Durango.
You pretty much have to remove the entire heater box under the dash on the passenger side
Drain the water from your 1990 Chevy Corsica cooling system. Remove the heater core water supply hoses. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
I've been trying to figure out the same thing.
Take out the whole dash and then the heater core should be behind the glove box on the passenger side.
Did they replace the MAP sensor? If not, good chance there's your problem.
sell the car
just check the cars manual.. normally in the glove box.